HEINONEN, R. A soil core sampler with provision for cutting successive layers. Agricultural and Food Science, [S. l.], v. 32, n. 1, p. 176–178, 1960. DOI: 10.23986/afsci.71522. Disponível em: https://journal.fi/afs/article/view/71522. Acesso em: 23 nov. 2024.